アルミナ-ジルコニア-グラファイト系耐火物の特性に及ぼす粒度分布の影響

DOI Web Site Web Site 被引用文献4件 参考文献23件
  • YU Shan-Pu
    Department of Materials Science and Engineering, National Cheng Kung University
  • WANG Moo-Chin
    Department of Mechanical Engineering, National Kaohsiung Institute of Technology
  • HON Min-Hsiung
    Department of Materials Science and Engineering, National Cheng Kung University

書誌事項

タイトル別名
  • Effects of Particle Size Distribution on the Properties of Alumina-Zirconia-Graphite Refractory.

この論文をさがす

説明

Alumina-Zirconia-Graphite (AZG) refractory is one of the most important refractory for AISI 304 stainless steel strip casting, especially used as slide gates or nozzles. A suitable particle size distribution desired by simple R(c/m) values, weight of coarse Al2O3 (500-1000μm)/weight of medium Al2O3 (61-125μm), is important for controlling the apparent porosity, which affects the thermal shock resistance and erosion resistance as well. The size modulus, R(c/m), has been shown to be a useful parameter for the evaluation of particle packing, as controlled by the particle size distribution, on various properties of the Alumina-Zirconia-Graphite refractory. The lowest apparent porosity (5%) and highest bulk density (3.5g/cm3) were obtained at R(c/m) value of 6.0. The relation of bulk density (D) with R(c/m) can be represented by D=-0.040R2 (c/m)+0.351R(c/m)+2.741 for R(c/m) 0.4 to 3.7, and D=-0.006R2(c/m)+0.080R(c/m)+3.272 for R(c/m) 3.7 to 13, respectively. The average pore size (Ps) with R(c/m) value is expressed as Ps=0.035R2(c/m)-0.554R2(c/m)+7.138. The average pore size (Ps) of AZG refractory decreased from 6.5μm to 3.1μm, as the R(c/m) increased from 0.4 to 6.0. The number of air exposure cycles for the thermal shock resistance (Rst) were 14-17, and the relation of thermal shock resistance with R(c/m) is correlated by Rst=0.160R2(c/m) -1.371R(c/m)+16.860 for R(c/m) 0.4 to 3.7, and Rst=0.007R2(c/m)+0.277R(c/m)+13.082 for R(c/m) 3.7 to 13, respectively. The thermal shock resistance decreased gradually as the R(c/m) value was increased from 0.4 to 3.7. The effect of apparent porosity (Po) on the erosion fraction (Er) is expressed by Er=0.233 Po+1.204.

収録刊行物

被引用文献 (4)*注記

もっと見る

参考文献 (23)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ